Outside metal car-roof.



J. J. HOFFMAN. OUTSIDE METAL CAR ROOF. APPLICATION PILD MAY 2, 1912.

3939,40@ ,Pa1;@nteasept.24,1912.

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UNTTED sTATns PATENT onirica.

JOHN J'. HOFFMAN,

OF NEW KENSINGTON, PENNSYLVANIA, ASSIGNOR TO PETER MURPHY, F PITTSBURGH, PENNSYLVANIA.

OUTSIDE METAL CAR-ROOF.

Application filed May 2,

which the Jfollowing is a Mv invention relates specification.

part ofthis specification and wherein like symbols refer to like parts wherever they occur, Figure 1- is a vertical section lengthwise of the car showing my invention applied thereto; Fig. 2 is a vertical section crosswise of the car showing my invention applied thereto; Fig. 3 is a plan view. showing my invention applied to the root sheets; and Fig. 4 is a longitudinal view showing the engagement of one seam cap with another. Fig. 5 is a side elevation of the end ortion of the long arm of a seam cap.

My present ridge cap is preferably made of ,a strip by means of suitable dies. The

, tion of the strip, for the full length thereof, is formed into an upwardlyr extending groove or marginal portions 2 of this strip are inclined downwardly at an angle substantially equal to or greater than the pitch of the roof. This longitudinal' groove or channel is intended to accommodate the ridge'seams or upturned ends of the roof sheets. A similar groove or channel 3 is designed to 'accommodate the side seams formed crosswise of the strip, without, however, alecting the slope or inclination of the longitudinal margins of the strip. At the point of intersection o" the longitudinal groove and the transverse groove, a hole 4: is punched and the margins 5' ci the hole are pro'ected upwardly to form an annular boss. T

of Westmoreland and State of Pennsylvania, have invented a certain new and useful Imi provement in Outside Metal Car-Roofs, of:

to outside metal car roofs of the type wherein the several root; sheets extend from eaves to ridge and aree by interlockingv as to permit said sheets 'i of sheet metal formed into shapemiddle por-l channel 1, and the longitudinalH e region 6 vsurrouiiding Specification of Letters Patent. PatQntd-Sepf. ,24;1912.

l'1912. semi No. 694,679.

area greaterthan the width of the grooves or channels, and at the margins of this ilat portion which excess is doubled back over the ends of the normal portions of the grooves oi channels.

surplus metal ot' the nearest. margin-0f the atarea is such that its overhanging portion 7 is slightly spaced above the top of the longitudinal groove.l The space thus ro-- vided between the'top of the groove an -the shoulder overlianging it nis designed to receive the end of the long arm seam cap, the side margins of said end being beveled to insure properA matchingthat is, the corners of the long arm are trimmed oft as shown at 8fl so that the long arm will have its greatestJ extension atI its top and thereby enable suchtop portion to extend into engagement with said compancap is such that when the end of said long arm is positioned under the overhanging shoulder 7 pro short arm 9 of the first laid'seam cap, the Itransverse seam of saidcap will come over the next succeeding transverse roof seam. By this arrangement, the long arm of -each succeeding seam ca of the next prece ing seam cap but vwith the end of the long arm under the overhanging shoulder provided therefor.v cap is thus held' directly by its own bolt 1'0 age ot water over' to 'make my seam cap of 'While lI prefer sheet-metal formed viously be made. of other materials.

i What I claim as my invention and to secure by'Letters Patent is:

intersectionglongitudinal.` ,grooves and a shouldeaoverhanging. the top j ofthet longitudinal described.

there is an excess of metal 8 of a second.`

may be used interchangeably. For thispurpose, the length of the long arm of the seam overlies -the short arm This washer has a tendency` to prevent leakinto shape, it may ob- 1. A ridge seam cap forcarroofshaving and transversey this bolt hole is approximately flat' for-an l I The transverse groove is formed near one y end ot the strip; and the disposition of the ion seam cap. Thus the several' seam caps Yided therefor toward the.

Each seam and indirectly by the bolts of the seam caps iec 5 cove substantall as S1' e .Y no

.longitudinal A ridge seam Cap for oar roofs comprising an elongated strip of sheet metal having intersecting longitudinal and transverse grooves onearin of said Cap having its ends beveledv and a shoulder overhanging the groove,^ substantially as described.' 1 fl y 3. A ridge seam cap for car roofshaving a groove extending transversel thereof` near one end and a longitudine ,ly extending groove and a iattened area-at the intersection. of said, grooves; said flattened area having a shoulder'overhenging the longitudinal groove in the direction of the near end of the seam cap, substantiallgr as described.

4. In a' oar roof,the combination of roof sheets extending vfrom eavesl to rid e 'and er, of

movably mounted relative to each ot seam caps at the ridge, each of said Seam caps having a longitudinal groove adapted to receive the uptnrned ridge ends of the sheets and e transverse groove adapted'to receive the side seams and a vbolt hole-at the point of intersection of said grooves, the portion of the seam cop adjacent 'tov said me cents eaoh, by Waahlmgton, D. Wl

bolt hole being iiattened and provided with a shoulder overhangi-ng the longitudinal groove, one oi the seam caps having its end engaged below the shoulder of cent cap. v

5. In a ear roof, the eombination of roof sheets extending from .eaves toridge and the next adj af movably interlocked Wit-l1 eachother, of, I,

seam caps at the ridge2 each of said seam `ea'ps having a' longitudinal groove adapted to receive the upturned ridge ends ofr the sheets and 'a transverse groove adapted toreceive the side seams-and a bolt' hole atthe 'point of intersection ofeaid grooves, a'bolt extendingv 'through said bolt holeaend a said bol't"1xn' ile1` flexible Washer mounted' on nea'th the seam capand overlapping the :ui-

jacent corners of the roof sheets.`v

Signed at New Kensington, Pennsylvania, y l' this-26th day of April, 1912.

Witnesses: y v

HARRY C. WALLEY, A. A. Porre.

addressing-the "Commllsioner of i'ratents,

.ioingT J. HoiirMANQ4 i 

